Shaft-coupling.



E. FUCHS. SHAFT COUPLING,

APPLICATION FILED MAY 6, 1916 mm July 31, 1917.

I In wed for.

2 SHEETS-SHEET 1.

E. FUCHS.

SHAFT COUPLING. I APPLICATION FILED MAY 5| IQIS. 1 ,235, 1 239, Patent-ed July 31, 191?.

2 SHEETSSHEET 2.

UNITED STATES PATENT orrroE- ERNEST FUCHS, F BILLANCOURT, FRANCE, ASSIGNOR TO LOUIS RENAULT, OF BILLANCOUBT, FRANCE.

SHAFT-COUPLING.

Patented July 31, 1917.

Original application filed August 31, 1915, Serial No. 48,354. Divided and this application filed May 6, 1916.

Serial No. 95,912.

To all whom it may concern: 7

Be it knownthat I, ERNEST FUCHS, en-

. gineer, of 15 Bus Gustave Sandoz, at Billancourt, Department of the Seine, France, citi zen of the French Republiqhave invented certain new and useful Improvements in Shaft-Couplings; and I do hereby declare the followlng to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to a device for automatically controlling the angle of lead of the ignition under all conditions of operation in lnternal combustion engines.

The device comprises, in accordance with the invention, a number of masses secured to pendular arms pivotally mounted on suitable axes, on shafts. The said masses move in curved paths and bear on and control the angular displacement of two plates mounted on the engine shaft and the magneto shaft,

respectively.

By selecting a suitable curvature of the path in which the masses move, itis possible to control the angle of displacement for all speeds of rotation of the device.

The accompanying drawings illustrate, by

Way of example, different constructional forms of the invention.

Figures 1 and 2 are respectively a vertical section at right angles to the axis and a vertical section taken on the axis of a first conare-secured to the end of four pendular arms 5, 6, 7 and 8 pivotally mounted in pairs on axes 9 and 10 carried by a central support 11 independent of the plates '12 and 13 and mounted on the controlling shaft.

- The said plates 12 and 13 are provided with oppositely projecting sectors 14: and 15 provided with curved paths 16 and 17, re-

spectively. The masses, 1, 2, 3 and 1 under the influence of centrifugal force, move away from one another and cause to separate, by contact therewith, the rolling path vice which differs from that illustrated in Figs. 1 and 2 by the fact that the masses 1, 2, 3 and 4 are pivotally connected, by arms 5', 6, 7 and 8' to supports 14 and 15' cast together with the plates 12 and 13, respectively, and by the fact that the curved paths 16 and 17 are carried by an intermediate member 20 adapted to pivot on the controlling shaft.

The springs 18 and 19' acting on the supports 14 and 15 tend, as previously described, to separate. the plates 12- and 13.

The operation of this device is the same I as that of the constructional form herein before described, the masses 1, 2, 3' and 4 acting, on account of tendency to separate on the curved paths, of the member 20; the latter being subject to converse reactions remains stationary while the points of articulation of the masses on'the plates tend to approach one another and angularly displace the plates.

. It is evident that the above described de' vice is capable of modification, thus the helical springs may be replaced throughout by a single spiral spring.

aving now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. The combination with a driving shaft and a driven shaft, of a coupling device interposed between the two comprising a pair of elements secured respectively to the shafts and having opposed cam surfaces, an element located intermediate of the aforementioned elements and carried by one of'said shafts, and arms pivoted on said last-mentioned element and having rollersengaging the cam surfaces, whereby upon the movement of the rollers under the action of the centrifugal force, the shafts will be relatively displaced to change their circumferential relation.

2, The combination With a driving shaft and a driven shaft, of a coupling device interposed between the two comprising a pair of elements secured respectively to the shafts, an element located intermediate the aforementioned elements and mounted on the driving shaft, and means carried by the intermediate element and cooperating with 10 the first-mentioned elements to adjust the shafts, each With relation to the other.

In testimony whereof I aflix my signature, in presence of two Witnesses.

, ERNEST FUCHS.

Witnesses:

CHAB. P. PRnssLY, HENRI COHEN. 

